Not willing to assist at all

i had a Tracker fitted to my new vehicle in August 2014. From August to December Tracker was billing Hollard. In December this changed and i was now liable but neither Hollard or Tracker informed me about this. At the end of March Tracker (without authorization) debits my account R800, i called them to inquire why. i was told that there was a system error and the debit was for the last 3 months. I disputed this as i was not sent any communication, i was then told they had sent an SMS informing me about the debit, which was sent to a number that was not mine.<br> <br> I called Tracker and informed them that i could not pay this amount in one sum. i told them that i was willing to pay the outstanding amount they could debit me a bit extra each month till it had been paid up. i spoke with a lady (Asanda) who was understanding and said she would speak to superior. Her superior told her that there was nothing they could do, i had to pay the amount in full or the account will be handed over. i think this is a horrible display of customer service, this was their system error and lack of communication, and even though i was willing to pay the money, Tracker refused to help in any way.